package interfaces;
 class Teste {    
        public static void main(String[] args) {
        	
            AreaCalculavel a = new Retangulo(3,2);
            
            Circulo c = new Circulo(10,1);
            
            System.out.println(a.calculaArea());
            
            System.out.println(c.calculaArea());
           
        }
    }